Don't know if there's a "easy" way to do it, but this is one of the most popular topics on this site. You might go to the electrical department and do a search. You'll be overwhelmed with what you discover.
Is your gauge working at all? If not then you might want to look at the grounding points for both the gauge as well as the sending unit. This is one of the most common reasons for a gauge to not work (assuming 12 volts have not been introduced directly to the gauge). Do a search and see what you come up with.


Craig

My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear
My truck ....... Respect The Rust
If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.